.about-container {
    min-height: 100vh;
    background: url('../images/9.jpg') center/cover no-repeat fixed;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.about-content {
    background: rgba(255, 255, 255, 0.95);
    padding: 3rem;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    max-width: 1000px;
    width: 100%;
}

/* 个人简介部分样式 */
.profile-section {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #eee;
}

.profile-image img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.profile-info {
    flex: 1;
}

.profile-info h1 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 0.5rem;
}

.profile-info .title {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 1rem;
}

.profile-info .description {
    color: #444;
    margin-bottom: 1rem;
}

.profile-info .bio {
    color: #666;
    line-height: 1.6;
}

/* 课程简介部分样式 */
.course-section {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #eee;
}

.course-section h2 {
    color: #333;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    text-align: center;
}

.course-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.course-item {
    background: rgba(255, 255, 255, 0.8);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.course-item h3 {
    color: #007bff;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.course-item h3 i {
    font-size: 1.2rem;
}

.course-item ul {
    list-style: none;
    padding: 0;
}

.course-item ul li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.course-item ul li:before {
    content: "•";
    color: #007bff;
    position: absolute;
    left: 0;
}

/* 联系方式部分样式 */
.contact-section {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

.contact-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: none;
    font-size: 1.5rem;
    color: white;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
}

.contact-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.qq { background: #12B7F5; }
.weibo { background: #E6162D; }
.phone { background: #4CAF50; }

.tooltip {
    display: none;
    position: absolute;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 14px;
    z-index: 1000;
    white-space: nowrap;
    transform: translateX(-50%);
    pointer-events: none;
}

.tooltip:after {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    border-width: 0 6px 6px;
    border-style: solid;
    border-color: transparent transparent rgba(0, 0, 0, 0.8);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .profile-section {
        flex-direction: column;
        text-align: center;
    }

    .profile-image {
        margin: 0 auto;
    }

    .course-info {
        grid-template-columns: 1fr;
    }

    .contact-section {
        gap: 1rem;
    }
}
